<template>
    <div id="detail">
        <detail-nav-bar class="detail-nav" @titleClick="titleClick" ref="nav"/>
        <scroll class="content" ref="scroll" :probe-type="3" @scroll="contentScroll">
            <detail-swiper :top-images="topImages"/>
            <detail-base-info :goods="goods"/>
            <detail-shop-info :shop="shop"/>
            <detail-goods-info :detail-info="detailInfo" @imageLoad="imageLoad"/>
            <detail-param-info ref="params" :param-info="paramInfo"/>
            <detail-comment-info ref="comment" :comment-info="commentInfo"/>
            <goods-list ref="recommend" :goods="recommends"/>
        </scroll>
        <detail-bottom-bar @addCart="addToCart"/>
        <back-top @click.native = "backClick" v-show="isShowBackTop"/>
    </div>
</template>

<script>
    import DetailNavBar from "./childComps/DetailNavBar";
    import DetailSwiper from "./childComps/DetailSwiper";
    import DetailBaseInfo from "./childComps/DetailBaseInfo";
    import DetailShopInfo from "./childComps/DetailShopInfo";
    import DetailGoodsInfo from "./childComps/DetailGoodsInfo";
    import DetailParamInfo from "./childComps/DetailParamInfo";
    import DetailCommentInfo from "./childComps/DetailCommentInfo";
    import DetailBottomBar from "./childComps/DetailBottomBar";

    import Scroll from "components/common/scroll/Scroll";
    import GoodsList from "components/contents/goods/GoodsList";
    import BackTop from "components/contents/backTop/BackTop";

    import {getDetail, Goods, Shop, GoodsParam, getRecommend} from 'network/detail';
    import {deBounce} from "../../common/utils";
    import { mapActions } from 'vuex';

    export default {
        name: "Detail",
        components:{
            DetailNavBar,
            DetailSwiper,
            DetailBaseInfo,
            DetailShopInfo,
            DetailGoodsInfo,
            DetailParamInfo,
            DetailCommentInfo,
            Scroll,
            GoodsList,
            DetailBottomBar,
            BackTop
        },
        data() {
            return {
                iid:null,
                topImages: [],
                goods:{},
                shop:{},
                detailInfo:{},
                paramInfo:{},
                commentInfo:{},
                recommends:[],
                themeTopYs:[],
                getThemeTopY:null,
                currentIndex : 0,
                isShowBackTop:false,
            }
        },
        created() {
            //1.获取iid
            this.iid = this.$route.params.iid

            //2.请求详情数据
            getDetail(this.iid).then(res => {
                //1.获取顶部轮播图片的数据
                //console.log(res);
                const data = res.result;
                this.topImages = data.itemInfo.topImages

                //2.获取商品信息
                this.goods = new Goods(data.itemInfo, data.columns, data.shopInfo.services)
                //3.创建店铺信息的对象
                this.shop = new Shop(data.shopInfo)
                //4.保存商品的详情数据
                this.detailInfo = data.detailInfo;
                //5.获取参数的信息
                this.paramInfo = new GoodsParam(data.itemParams.info,data.itemParams.rule)
                //6.获取评论的信息
                if(data.rate.cRate !== 0){
                    this.commentInfo = data.rate.list[0]
                }
            })

            //3.请求推荐数据
            getRecommend().then(res => {
                this.recommends = res.data.list
            })

            //4.给getThemeTopY赋值
            this.getThemeTopY = deBounce(() => {
                this.themeTopYs = []
                this.themeTopYs.push(0);
                this.themeTopYs.push(this.$refs.params.$el.offsetTop)
                this.themeTopYs.push(this.$refs.comment.$el.offsetTop)
                this.themeTopYs.push(this.$refs.recommend.$el.offsetTop)
                this.themeTopYs.push(Number.MAX_VALUE)
                //console.log(this.themeTopYs);
            },200)
        },
        methods:{
            ...mapActions(['addCart']),
            imageLoad(){
                this.$refs.scroll.refresh()
                this.getThemeTopY()
            },
            titleClick(index){
                // console.log(index);
                this.$refs.scroll.scrollTo(0,-this.themeTopYs[index],200)
            },
            contentScroll(position){
                const positionY = -position.y
                let length = this.themeTopYs.length
                for(let i = 0;i < length-1;i++){
                    if(this.currentIndex !==i && (positionY >= this.themeTopYs[i] && positionY < this.themeTopYs[i+1])){
                        this.currentIndex = i;
                        this.$refs.nav.currentIndex = this.currentIndex

                    }
                }

                this.isShowBackTop = (-position.y) > 1000
            },
            backClick (){
                this.$refs.scroll.scrollTo(0,0)
            },
            addToCart(){
                //1.获取购物车需要展示的信息
                const product = {}
                product.image = this.topImages[0];
                product.title = this.goods.title;
                product.desc = this.goods.desc;
                product.price = this.goods.realPrice;
                product.iid = this.iid;

                //2,将商品添加到购物车里
                //this.$store.cartList.push(product)
                // this.$store.commit('addCart',product)

                /*this.$store.dispatch('addCart',product).then(res => {
                  console.log(res);
                })*/
                this.addCart(product).then(res => {
                    //console.log(this.$toast);
                    this.$toast.show(res,2000)
                })
            }
        }
    }
</script>

<style scoped>
    #detail{
        position: relative;
        z-index:9;
        background-color: #fff;
        height: 100vh;
    }

    .content{
        height: calc(100% - 44px - 49px);
    }

    .detail-nav{
        position: relative;
        z-index:9;
        background-color: #fff;
    }
</style>
